Prospect in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10094104
MRDS ID A106215
Record type Site
Current site name Homesteader-Martha

Geographic coordinates

Geographic coordinates: -149.30269, 61.79956 (WGS84)
Relative position Best location from Cobb (1979) is the NW 1/4 of the Anchorage 1:250,000-scale topographic map. The original reference provided no data on the exact location of the prospect. Latitude and longitude coordinates provided are a generalized location, representing the NW1/4 of the Anchorage 1:250,000-scale topographic map. Prospect probably occurs in the Anchorage D-6 or D-7 1:63,360-scale map.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Host
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -149.30269, 61.79956

Comments on the geologic information

  • Geologic Description = Details about the prospect are unavailable. Most likely, a gold-bearing quartz vein(s) cuts the Late Cretaceous Willow Creek Pluton. The Willow Creek Pluton is a zoned pluton. The outer part consists of hornblende quartz diorite and lesser hornblende tonalite; the core consists of hornblende-biotite granodiorite, and lesser hornblende-biotite quartz monzodiorite and biotite quartz monzonite.
  • Age = Late Cretaceous or younger; the host of mineralization is the Late Cretaceous Willow Creek Pluton.
  • Age = Host rock is Late Cretaceous.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Willow Creek

Comments on the workings information

  • Workings / Exploration = Brooks and Capps (1924) reported development, but no production, in 1922.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106215
USGS Alaska Resource Data File ARDF AN161

Bibliographic references

  • Deposit

    Brooks, A.H. and Capps, S.R., 1924, Mineral industry in Alaska, 1922: U.S. Geological Survey Bulletin 755, p. 1-56.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in the Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.

Comments on the references

  • Primary Reference = Brooks and Capps, 1924

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide Au-quartz veins ? (Cox and Singer, 1986; model 36a ?)

Reporter information

Type Date Name Affiliation Comment
Reporter 30-JUL-1998 D.P. Bickerstaff U.S. Geological Survey